#include <stdio.h>
#include <math.h>
/* 你编写的函数将嵌入在这里 */
void swap(int *x, int *y)
{
    int *q;
    q = x;
    x = y;
    y = q;
    printf("After swap:%d,%d", *x, *y);
}
int main()
{
    int a, b, count = 0;
    scanf("%d%d", &a, &b);
    int *p1, *p2;
    p1 = &a;
    p2 = &b;
    swap(p1, p2);
    return 0;
}
